useEffect Error: Minified React error #321 (GTM implementation instead of google analitycs)
Posted By: Anonymous
Why I got Minified React Error #321 during the next build
compilation? Did I mess up with useEffect()
?
Part of the error throwed :
Automatically optimizing pages .(node:763) ExperimentalWarning: The fs.promises API is experimental
(node:762) ExperimentalWarning: The fs.promises API is experimental
(node:761) ExperimentalWarning: The fs.promises API is experimental
Automatically optimizing pages .Error: Minified React error #321; visit https://reactjs.org/docs/error-decoder.html?invariant=321 for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
at Z (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/index.js:10945:404)
at module.exports.viRO.exports.useEffect (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/index.js:10950:356)
at App (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/index.js:7133:29)
at d (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/index.js:1023:498)
at $a (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/index.js:1026:16)
at a.b.render (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/index.js:1031:476)
at a.b.read (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/index.js:1031:18)
at renderToString (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/index.js:1041:364)
at render (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/index.js:577:16)
at Object.renderPage (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/index.js:899:16)
Error occurred prerendering page "/". Read more: https://err.sh/next.js/prerender-error
Error: Minified React error #321; visit https://reactjs.org/docs/error-decoder.html?invariant=321 for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
Automatically optimizing pages ..Error: Minified React error #321; visit https://reactjs.org/docs/error-decoder.html?invariant=321 for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
at Z (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/[formationUrl]/[courseCode].js:21744:404)
at module.exports.viRO.exports.useEffect (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/[formationUrl]/[courseCode].js:21749:356)
at App (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/[formationUrl]/[courseCode].js:14938:29)
at d (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/[formationUrl]/[courseCode].js:1114:498)
at $a (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/[formationUrl]/[courseCode].js:1117:16)
at a.b.render (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/[formationUrl]/[courseCode].js:1122:476)
at a.b.read (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/[formationUrl]/[courseCode].js:1122:18)
at renderToString (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/[formationUrl]/[courseCode].js:1132:364)
at render (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/[formationUrl]/[courseCode].js:577:16)
at Object.renderPage (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/[formationUrl]/[courseCode].js:899:16)
Error: Minified React error #321; visit https://reactjs.org/docs/error-decoder.html?invariant=321 for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
at Z (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/[formationUrl]/[courseCode].js:21744:404)
at module.exports.viRO.exports.useEffect (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/[formationUrl]/[courseCode].js:21749:356)
at App (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/[formationUrl]/[courseCode].js:14938:29)
at d (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/[formationUrl]/[courseCode].js:1114:498)
at $a (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/[formationUrl]/[courseCode].js:1117:16)
at a.b.render (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/[formationUrl]/[courseCode].js:1122:476)
at a.b.read (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/[formationUrl]/[courseCode].js:1122:18)
at renderToString (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/[formationUrl]/[courseCode].js:1132:364)
at render (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/[formationUrl]/[courseCode].js:577:16)
at Object.renderPage (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/[formationUrl]/[courseCode].js:899:16)
Error occurred prerendering page "/✘✘✘/✘✘✘/syndic-copropriete". Read more: https://err.sh/next.js/prerender-error
Error: Minified React error #321; visit https://reactjs.org/docs/error-decoder.html?invariant=321 for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
Error occurred prerendering page "/✘✘✘/✘✘✘/aides-renovation-energetique". Read more: https://err.sh/next.js/prerender-error
Error: Minified React error #321; visit https://reactjs.org/docs/error-decoder.html?invariant=321 for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
Automatically optimizing pages ..Error: Minified React error #321; visit https://reactjs.org/docs/error-decoder.html?invariant=321 for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
at Z (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/[formationUrl]/[courseCode].js:21744:404)
at module.exports.viRO.exports.useEffect (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/[formationUrl]/[courseCode].js:21749:356)
at App (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/[formationUrl]/[courseCode].js:14938:29)
at d (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/[formationUrl]/[courseCode].js:1114:498)
at $a (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/[formationUrl]/[courseCode].js:1117:16)
at a.b.render (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/[formationUrl]/[courseCode].js:1122:476)
at a.b.read (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/[formationUrl]/[courseCode].js:1122:18)
at renderToString (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/[formationUrl]/[courseCode].js:1132:364)
at render (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/[formationUrl]/[courseCode].js:577:16)
at Object.renderPage (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/[formationUrl]/[courseCode].js:899:16)
Error occurred prerendering page "/✘✘✘". Read more: https://err.sh/next.js/prerender-error
Error: Minified React error #321; visit https://reactjs.org/docs/error-decoder.html?invariant=321 for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
Error: Minified React error #321; visit https://reactjs.org/docs/error-decoder.html?invariant=321 for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
at Z (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/inscription.js:21165:404)
at module.exports.viRO.exports.useEffect (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/inscription.js:21170:356)
at App (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/inscription.js:14443:29)
at d (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/inscription.js:1114:498)
at $a (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/inscription.js:1117:16)
at a.b.render (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/inscription.js:1122:476)
at a.b.read (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/inscription.js:1122:18)
at renderToString (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/inscription.js:1132:364)
at render (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/inscription.js:577:16)
at Object.renderPage (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/inscription.js:899:16)
Error occurred prerendering page "/✘✘✘/inscription". Read more: https://err.sh/next.js/prerender-error
Error: Minified React error #321; visit https://reactjs.org/docs/error-decoder.html?invariant=321 for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
Automatically optimizing pages .Error: Minified React error #321; visit https://reactjs.org/docs/error-decoder.html?invariant=321 for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
at Z (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/inscription.js:21165:404)
at module.exports.viRO.exports.useEffect (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/inscription.js:21170:356)
at App (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/inscription.js:14443:29)
at d (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/inscription.js:1114:498)
at $a (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/inscription.js:1117:16)
at a.b.render (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/inscription.js:1122:476)
at a.b.read (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/inscription.js:1122:18)
at renderToString (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/inscription.js:1132:364)
at render (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/inscription.js:577:16)
at Object.renderPage (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/inscription.js:899:16)
Error: Minified React error #321; visit https://reactjs.org/docs/error-decoder.html?invariant=321 for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
at Z (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/inscription.js:21165:404)
at module.exports.viRO.exports.useEffect (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/inscription.js:21170:356)
at App (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/inscription.js:14443:29)
at d (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/inscription.js:1114:498)
at $a (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/inscription.js:1117:16)
at a.b.render (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/inscription.js:1122:476)
at a.b.read (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/inscription.js:1122:18)
at renderToString (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/inscription.js:1132:364)
at render (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/inscription.js:577:16)
at Object.renderPage (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/inscription.js:899:16)
Error occurred prerendering page "/✘✘✘/inscription". Read more: https://err.sh/next.js/prerender-error
Error: Minified React error #321; visit https://reactjs.org/docs/error-decoder.html?invariant=321 for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
Error: Minified React error #321; visit https://reactjs.org/docs/error-decoder.html?invariant=321 for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
at Z (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/merci.js:20913:404)
at module.exports.viRO.exports.useEffect (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/merci.js:20918:356)
at App (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/merci.js:14649:29)
at d (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/merci.js:1114:498)
at $a (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/merci.js:1117:16)
at a.b.render (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/merci.js:1122:476)
at a.b.read (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/merci.js:1122:18)
at renderToString (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/merci.js:1132:364)
at render (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/merci.js:577:16)
at Object.renderPage (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/merci.js:899:16)
Error occurred prerendering page "/✘✘✘/merci". Read more: https://err.sh/next.js/prerender-error
Error: Minified React error #321; visit https://reactjs.org/docs/error-decoder.html?invariant=321 for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
Error occurred prerendering page "/✘✘✘/inscription". Read more: https://err.sh/next.js/prerender-error
Error: Minified React error #321; visit https://reactjs.org/docs/error-decoder.html?invariant=321 for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
Error: Minified React error #321; visit https://reactjs.org/docs/error-decoder.html?invariant=321 for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
at Z (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/_error.js:6809:404)
at module.exports.viRO.exports.useEffect (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/_error.js:6814:356)
at App (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/_error.js:4227:29)
at d (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/_error.js:907:498)
at $a (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/_error.js:910:16)
at a.b.render (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/_error.js:915:476)
at a.b.read (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/_error.js:915:18)
at renderToString (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/_error.js:925:364)
at render (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/_error.js:461:16)
at Object.renderPage (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/_error.js:783:16)
Error occurred prerendering page "/404". Read more: https://err.sh/next.js/prerender-error
Error: Minified React error #321; visit https://reactjs.org/docs/error-decoder.html?invariant=321 for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
Automatically optimizing pages ..Error: Minified React error #321; visit https://reactjs.org/docs/error-decoder.html?invariant=321 for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
at Z (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/merci.js:20913:404)
at module.exports.viRO.exports.useEffect (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/merci.js:20918:356)
at App (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/merci.js:14649:29)
at d (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/merci.js:1114:498)
at $a (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/merci.js:1117:16)
at a.b.render (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/merci.js:1122:476)
at a.b.read (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/merci.js:1122:18)
at renderToString (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/merci.js:1132:364)
at render (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/merci.js:577:16)
at Object.renderPage (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/merci.js:899:16)
Error occurred prerendering page "/✘✘✘/merci". Read more: https://err.sh/next.js/prerender-error
Error: Minified React error #321; visit https://reactjs.org/docs/error-decoder.html?invariant=321 for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
Automatically optimizing pages ...Error: Minified React error #321; visit https://reactjs.org/docs/error-decoder.html?invariant=321 for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
at Z (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/merci.js:20913:404)
at module.exports.viRO.exports.useEffect (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/merci.js:20918:356)
at App (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/merci.js:14649:29)
at d (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/merci.js:1114:498)
at $a (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/merci.js:1117:16)
at a.b.render (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/merci.js:1122:476)
at a.b.read (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/merci.js:1122:18)
at renderToString (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/merci.js:1132:364)
at render (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/merci.js:577:16)
at Object.renderPage (/✘✘✘/✘✘✘/✘✘✘/✘✘✘/.next/serverless/pages/[domainCode]/merci.js:899:16)
Error occurred prerendering page "/✘✘✘/merci". Read more: https://err.sh/next.js/prerender-error
Error: Minified React error #321; visit https://reactjs.org/docs/error-decoder.html?invariant=321 for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
> Build error occurred
Error: Export encountered errors
at _default (/usr/local/lib/node_modules/next/dist/export/index.js:19:1164)
at process._tickCallback (internal/process/next_tick.js:68:7)
Automatically optimizing pages .%
What I tried:
Implemented the gtag on my next Js app. I followed the Zeit example from
https://github.com/zeit/next.js/tree/canary/examples/with-google-analytics
I precise something important this example show us how to add google analytics
and not GTM
that’s two very differentes thing, but you just need to change:
// pages/_document.tsx
import Document, { Head, Main, NextScript } from 'next/document';
import { Fragment } from 'react';
export default class MyDocument extends Document {
setGoogleTags() {
return {
__html: `
(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
})(window,document,'script','dataLayer','GTM-✘✘✘XX');
`
};
}
render() {
return (
<html>
<Head>
<Fragment>
<script dangerouslySetInnerHTML={this.setGoogleTags()} />
</Fragment>
</Head>
<body>
{/* <Fragment> */}
{/* <!-- Google Tag Manager (noscript) --> */}
<noscript>
<iframe
src="https://www.googletagmanager.com/ns.html?id=GTM-✘✘✘✘✘✘"
height="0"
width="0"
style={{ display: 'none', visibility: 'hidden' }}
></iframe>
</noscript>
<Main />
<NextScript />
</body>
</html>
);
}
}
I’ve just changed one thing is _app.js to _app.tsx :
//_app.tsx
import Router from 'next/router';
import React, { useEffect, ReactElement } from 'react';
import { AppProps } from 'next/app';
import '../CSS/index.css';
import * as gtag from '../lib/gtag';
import '@brainhubeu/react-carousel/lib/style.css';
export default function App({ Component, pageProps }: AppProps): ReactElement {
useEffect(() => {
const handleRouteChange = (url: string) => {
gtag.pageview(url);
};
Router.events.on('routeChangeComplete', handleRouteChange);
return () => {
Router.events.off('routeChangeComplete', handleRouteChange);
};
}, []);
return <Component {...pageProps} />;
}
https://github.com/zeit/next.js/issues/160#issuecomment-634502987
Solution
It might because you are importing React twice on the page:
import { useEffect } from 'react';
import Router from 'next/router';
import React, { ReactElement } from 'react';
should just be:
import React, { useEffect, ReactElement } from 'react';
import Router from 'next/router';
Edit
Try to delete your node_modules
and .next
folder from your local project and then run your npm run build
again. That seemed to solve it for me.
Answered By: Anonymous
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